My Super Pet Dragon - Chapter 13

Alvaric Zorvok, an ordinary young man who desperately wanted to become an Awakened. But when that moment finally came, he was instead summoned to a strange world—a desolate land filled with all kinds of monsters.His life became a struggle, and he came close to death countless times.Slowly, he climbed his way up and became one of the most feared beings in that world.“Can I ever return to Earth?”Alvaric didn’t know when—or if—he could go back. All he could do was fight, explore, and search for a way home.

One night she gets drunk and mistakes the most well-known Mafia boss for a host and intends to sleep with him.

Oh my! What should I do? It’s best to run away!

- Description from Novelupdates

A broken man who ended his own life finds himself reincarnated into the game he used to play. However, instead of becoming the protagonist or a powerful antagonist, fate places him in the role of a minor villain—a mere stepping stone for the protagonist in the game's first arc.

Su Wan is a Realm Destroyer. She shuttles to different time-spaces using the identity of the “Cannon Fodder Ex-Girlfriend”, dedicated to plotting how to happily tear apart the male protagonist and the female protagonist. –There’s no such thing as protagonists who can’t be torn apart, only Ex-Girlfriends who don’t work hard enough~